REF5040AQDRQ1 Equivalent & Substitute Parts

Part Overview

The REF5040AQDRQ1 is a Series Voltage Reference IC manufactured by Texas Instruments, designed for precision analog applications requiring a fixed 4.096V output. This active product operates across automotive temperature ranges (-40°C to 125°C) and meets AEC-Q100 automotive qualification standards. The device is supplied in 8-SOIC surface mount packaging with Cut Tape and Digi-Reel® options.

Identifying equivalent and substitute parts is necessary when the primary part number becomes unavailable, when supply chain optimization is required, or when design flexibility allows for alternative sourcing while maintaining electrical and mechanical compatibility.

Substiute Parts

REF5040AQDRQ1

Texas InstrumentsIn Stock: 2189REF5040AQDRQ1 Datasheet

Current PartRFQ

REF5040AIDR

Texas InstrumentsIn Stock: 36814REF5040AIDR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the REF5040AQDRQ1 is determined by strict equivalence across the following critical parameters:

• Fixed output voltage of 4.096V
• Output current capability of 10 mA
• Tolerance specification of ±0.1%
• Temperature coefficient of 8ppm/°C
• Noise performance of 12µVpp/V (0.1Hz to 10Hz)
• Input voltage range of 4.296V ~ 18V
• Supply current of 1.2mA
• 8-SOIC surface mount package
• Automotive grade with AEC-Q100 qualification
• ROHS3 compliance and MSL 2 rating

Parts meeting all these parameters are classified as parametric equivalents and direct substitutes. The REF5040AIDR meets these criteria and is identified as a parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the REF5040AQDRQ1 and REF5040AIDR are active products from Texas Instruments with identical electrical and mechanical specifications. Selection between these parts should be based on:

• Availability and lead time requirements
• Supply chain logistics and packaging preferences (Cut Tape vs. Digi-Reel®)
• Inventory levels and cost considerations
• Existing qualification documentation and design validation history

Both parts maintain automotive grade qualification with AEC-Q100 certification, ROHS3 compliance, and identical regulatory classifications (ECCN EAR99, HTSUS 8542.39.0001). Either part is suitable for direct substitution in applications designed for the REF5040AQDRQ1 without circuit modification or re-qualification.

Frequently Asked Questions (FAQ)

Q: Can the REF5040AIDR be used as a direct replacement for the REF5040AQDRQ1?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, output voltage, tolerance, temperature coefficient, noise performance, input voltage range, supply current, and package configuration. Direct substitution is supported without circuit changes.

Q: Are there any differences in automotive qualification between these parts?

A: No. Both parts carry automotive grade designation and AEC-Q100 qualification. Regulatory compliance, RoHS status, and REACH classification are identical.

Q: What is the significance of the packaging designation (Cut Tape vs. Digi-Reel®)?

A: Both packaging options are available for both part numbers. Cut Tape is suitable for manual assembly or small-volume production, while Digi-Reel® is optimized for automated high-volume manufacturing. The electrical and mechanical specifications remain unchanged regardless of packaging format.

Q: Are there any temperature or environmental limitations that would prevent substitution?

A: No. Both parts operate across the identical temperature range (-40°C to 125°C) and maintain the same moisture sensitivity level (MSL 2, 1 Year). Environmental and thermal performance are equivalent.

Q: What should be verified before implementing a substitution in production?

A: Verify that the substitute part number is approved within your supply chain management system and that inventory sourcing aligns with your procurement requirements. Both parts meet identical specifications and require no additional technical validation.